It is by disease that health is pleasant; by evil that good is pleasant; by hunger, satiety; by weariness, rest.
Opposition brings concord. Out of discord comes the fairest harmony.
The awake share a common world, but the asleep turn aside into private worlds.
There is a stability in the Universe because of the orderly and balanced process of change, the same measure coming out as going in, as if reality were a huge fire that inhaled and exhaled equal amounts.
The fairest order in the world is a heap of random sweepings.
Everything changes but change itself. Everything flows and nothing remains the same... You cannot step twice into the same river, for other waters and yet others go flowing ever on.